Home / 20,516.95-28,313.58-11,563.66

Finding the Fourth Proportional to 20,516.95, 28,313.58 and 11,563.66

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Solution

The fourth proportional to 20,516.95, 28,313.58 and 11,563.66 is: 15,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.95 : 28,313.58 = 11,563.66 : x
  2. Step 2: Convert to fraction form
    20,516.95/28,313.58 = 11,563.66/x
  3. Step 3: Cross multiply
    20,516.95x = 28,313.58 × 11,563.66
  4. Step 4: Simplify right side
    20,516.95x = 327,408,612.50
  5. Step 5: Solve for x
    x = 327,408,612.50/20,516.95
  6. Step 6: Final answer
    x = 15,957.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.